Delivery device

• US 9,254,203 B2
• Filed: 08/15/2013
• Issued: 02/09/2016
• Est. Priority Date: 08/20/2012
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Amos, Raymond G. Jr.
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US13/968,003
• Publication Number:
  US 20140052271A1
• Time in Patent Office: 908 Days
• Field of Search: 623 111- 138, 623 2365- 237
• US Class Current: 1/1
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/048 Ureters
• CPC Class Codes: A61M 25/0074 Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• CPC Class Codes: A61M 27/008 pre-shaped, for use in the urethral or ureteral tract

Abstract

A medical device includes an elongate member and a delivery member. The elongate member has a retention portion and defining a lumen. The retention portion has a first configuration and a second configuration different than the first configuration. The retention portion is biased to the first configuration. The delivery member has a collapsed configuration and an expanded configuration. The delivery member is configured to be disposed within the lumen of the elongate member to move the retention portion of the elongate member from the first configuration to the second configuration.

Claims

1. A method of placing an elongate member into a body of a patient, comprising:

expanding a delivery member from a deflated configuration to an expanded configuration to couple an elongate member to the delivery member, the elongate member including a biocompatible polymer material defining a spiral opening on a middle portion of the elongate member, the delivery member including an inflation lumen and an inflation portion having an inflation chamber, the inflation portion being inserted into a lumen of the elongate member, the inflation portion being expanded to contact an inner surface of the elongate member by transferring fluid into the inflation chamber of the inflation portion such that an outer surface of the inflation portion is frictionally coupled to the inner surface of the elongate member;

inserting the delivery member into a body of a patient while the elongate member is coupled to the delivery member;

collapsing the delivery member from the expanded configuration to the deflated configuration such that the inner surface of the elongate member is not frictionally coupled to the outer surface of the inflation portion of the delivery member; and

removing the delivery member from the body of the patient.

2. The method of claim 1, wherein expanding the delivery member includes expanding an outer diameter of the delivery member to a size larger than an inner diameter of the elongate member.

3. The method of claim 1, wherein the delivery member includes a handle proximally extending from the inflation portion, the handle including a stem configured to receive the fluid, the inflation lumen extending from the stem to the inflation chamber of the inflation portion.

4. The method of claim 1, wherein the elongate member includes a first retention member on a distal end portion of the elongate member and a second retention member on a proximal end portion of the elongate member, the lumen of the elongate member extending through the first and second retention members, the first and second retention members being curved when the elongate member is not coupled to the delivery member, the first and second retention members being forced to a linear configuration when the delivery member is coupled to the elongate member and the delivery member is in the expanded configuration.

5. The method of claim 4, wherein the spiral opening defines a plurality of coils on the middle portion of the elongate member, the first and second retention members being devoid of coils.

6. The method of claim 4, wherein the distal end portion of the elongate member is disposed within a kidney of the patient, and the proximal end portion of the elongate member is disposed within a ureter or bladder of the patient.

8. The method of claim 1, wherein the elongate member includes a retention member.

10. The method of claim 1, wherein the spiral opening defines a plurality of coils on the middle portion of the elongate member.

11. The method of claim 1, wherein a distal end portion of the elongate member is disposed within a kidney of the patient, and a proximal end portion of the elongate member is disposed within a ureter or bladder of the patient.

7. A method of placing an elongate member into a body of a patient, comprising:

expanding a delivery member from a deflated configuration to an expanded configuration to couple an elongate member to the delivery member, the elongate member including a biocompatible polymer material defining a spiral opening on a middle portion of the elongate member, the delivery member including a shaft and an inflation portion, the inflation portion being disposed around a middle part of the shaft such that both ends of the shaft extend beyond the inflation portion, the inflation portion being inserted into a lumen of the elongate member, the inflation portion being expanded to contact an inner surface of the elongate member such that an outer surface of the inflation portion is frictionally coupled to the inner surface of the elongate member;

inserting the delivery member into a body of a patient while the elongate member is coupled to the delivery member;

collapsing the delivery member from the expanded configuration to the deflated configuration such that the inner surface of the elongate member is not frictionally coupled to the outer surface of the inflation portion of the delivery member; and

removing the delivery member from the body of the patient.

12. The method of claim 7, wherein expanding the delivery member includes expanding an outer diameter of the delivery member to a size larger than an inner diameter of the elongate member.

13. The method of claim 7, wherein the delivery member includes a handle proximally extending from the inflation portion, the handle including a stem.

9. A method of placing an elongate member into a body of a patient, comprising:

expanding a delivery member from a deflated configuration to an expanded configuration to couple an elongate member to the delivery member, the elongate member including a biocompatible polymer material defining a spiral opening on a middle portion of the elongate member, the delivery member including an inflation portion that includes a coating having a friction limiting component that limits the friction between the delivery member and the elongate member, the inflation portion being inserted into a lumen of the elongate member, the inflation portion being expanded to contact an inner surface of the elongate member such that an outer surface of the inflation portion is frictionally coupled to the inner surface of the elongate member;

inserting the delivery member into a body of a patient while the elongate member is coupled to the delivery member;

collapsing the delivery member from the expanded configuration to the deflated configuration such that the inner surface of the elongate member is not frictionally coupled to the outer surface of the inflation portion of the delivery member; and

removing the delivery member from the body of the patient.

14. The method of claim 9, wherein expanding the delivery member includes expanding an outer diameter of the delivery member to a size larger than an inner diameter of the elongate member.

15. The method of claim 9, wherein the delivery member includes a handle proximally extending from the inflation portion, the handle including a stem configured to receive the fluid, the inflation lumen extending from the stem to the inflation chamber of the inflation portion.

16. The method of claim 9, wherein the spiral opening defines a plurality of coils on the middle portion of the elongate member.

17. The method of claim 9, wherein a distal end portion of the elongate member is disposed within a kidney of the patient, and a proximal end portion of the elongate member is disposed within a ureter or bladder of the patient.

18. The method of claim 9, wherein the delivery member includes a shaft, the inflation portion being disposed around a middle part of the shaft such that both ends of the shaft extend beyond the inflation portion.

19. The method of claim 9, wherein the elongate member includes a retention member.